Abstract/Description

Best practice in improved storage of groundnut seeds and protection against insects has been tested recently by the On-farm Seed Production Project (OFSP) in Senegal. Field trials were held in the departments of Nioro and Bignona, with samples of...

Notes

Best practice in improved storage of groundnut seeds and protection against insects has been tested recently by the On-farm Seed Production Project (OFSP) in Senegal. Field trials were held in the departments of Nioro and Bignona, with samples of groundnuts being subjected to various commonly-used techniques.
The use of the chemical Actellic (2% primiphos methyl) was effective, using a mix of 50gr per 100 kg of groundnuts. Equally effective were the addition of wood ash mixed at a rate of 1:4, or sand at a rate of 1:2. The ash particles create an abrasive action which can scratch the cuticle of the insect, and can block insect movement. Sand has similar results, as well as drawing moisture from the seeds; however, it makes sacks of seeds heavy to move around.
The use of neem leaves was not effective when used at a rate of 1:4. The insecticide effect of neem is mainly in neem seeds, but these are difficult to process.
Another improvement is in the earlier removal of groundnuts from the field than the normal two to four months that they are stacked after harvest. Initial insect infestation can be avoided if they are removed as soon as their moisture content has dropped to 10%, usually after two to four weeks after harvest.
OFSP, s/c PRITECH,
BP 3746, Dakar, Senegal